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Table 6 Evidence of internal consistency

From: The World Health Organization Quality of Life instrument for people with intellectual and physical disabilities (WHOQOL-Dis): evidence of validity of the Brazilian version

Domain/factor

Cronbach alpha

No. of items

PD (n = 162)

ID (n = 156)

Domain 1: Physical(a)

.839

.566

7

Domain 2: Psychological(a)

.745

.565

6

Domain 3: Social(a)

.663

.423

3

Domain 4: Environment(a)

.722

.673

8

WHOQOL-Bref

.898

.840

26

Factor 1(b)

.441

.493

3

Factor 2(b)

.757

.588

3

Factor 3(b)

.746

.685

6

Factor 4(c)

.760

.690

12

DISQOL module

.771

.692

13

WHOQOL-Dis(d)

.910

.858

37

  1. (a)WHOQOL-Bref. (b)DISQOL module: factors consistent with those identified in the original cross-cultural project (global sample). (c)Single factor suggested by the coordinating centre (POWER et al., [12]) as an alternative solution to the DISQOL module. (d)WHOQOL-Bref + DISQOL module.